A deployment done with that branch worked, mysql/0 (the leader) has the correct netmask for the secondary IP, and it's also listed as a secondary now: $ juju ssh mysql/0 Warning: Permanently added '10.96.10.114' (ECDSA) to the list of known hosts. Warning: Permanently added '10.96.9.16' (ECDSA) to the list of known hosts. Welcome to Ubuntu 14.04.3 LTS (GNU/Linux 3.13.0-63-generic x86_64) * Documentation: https://help.ubuntu.com/ System information disabled due to load higher than 4.0 Get cloud support with Ubuntu Advantage Cloud Guest: http://www.ubuntu.com/business/services/cloud ubuntu@juju-machine-0-lxc-5:~$ ip addr 1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 25: eth0: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether 00:16:3e:a6:8d:6b brd ff:ff:ff:ff:ff:ff inet 10.96.9.16/16 brd 10.96.255.255 scope global eth0 valid_lft forever preferred_lft forever inet 10.96.10.109/16 brd 10.96.255.255 scope global secondary eth0 valid_lft forever preferred_lft forever inet6 fe80::216:3eff:fea6:8d6b/64 scope link valid_lft forever preferred_lft forever $ juju status mysql --format=tabular [Services] NAME STATUS EXPOSED CHARM hacluster-mysql false cs:trusty/hacluster-23 landscape-client false cs:trusty/landscape-client-12 mysql unknown false cs:~ahasenack/trusty/percona-cluster-autodetect-vip-0 [Units] ID WORKLOAD-STATE AGENT-STATE VERSION MACHINE PORTS PUBLIC-ADDRESS MESSAGE mysql/0 unknown idle 1.24.5 0/lxc/5 10.96.9.16 hacluster-mysql/0 unknown idle 1.24.5 10.96.9.16 landscape-client/30 unknown idle 1.24.5 10.96.9.16 mysql/1 unknown idle 1.24.5 2/lxc/5 10.96.8.230 hacluster-mysql/1 unknown idle 1.24.5 10.96.8.230 landscape-client/32 unknown idle 1.24.5 10.96.8.230 mysql/2 unknown idle 1.24.5 4/lxc/5 10.96.9.11 hacluster-mysql/2 unknown idle 1.24.5 10.96.9.11 landscape-client/36 unknown idle 1.24.5 10.96.9.11 [Machines] ID STATE VERSION DNS INS-ID SERIES HARDWARE 0 started 1.24.5 squier.scapestack /MAAS/api/1.0/nodes/node-60c21846-546c-11e4-821d-2c59e54ace74/ trusty arch=amd64 cpu-cores=4 mem=16384M 2 started 1.24.5 hendel.scapestack /MAAS/api/1.0/nodes/node-f7bd8a1c-39ec-11e5-ab72-2c59e54ace74/ trusty arch=amd64 cpu-cores=4 mem=16384M 4 started 1.24.5 sekine.scapestack /MAAS/api/1.0/nodes/node-179adc6a-39eb-11e5-ab5d-2c59e54ace74/ trusty arch=amd64 cpu-cores=4 mem=16384M